Grain-drill.



- No. 64|,498. Patnted Ian. I6, |900. C. R. CHAIN, L. C. EVANS H. E.DUDSUN.

G R A I N D R l L L.

(Application led Feb. 18. 1899.)

(No Model.)

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NrTnD STATES PATENT rino.

CHARLES R. ORAIN, LOUIS O. EVANS, AND HARRY E. DODSON, OF SPRING- FIELD,OHIO, ASSIGNORS TO THE P. P. MAST du COMPANY,5OF SAME PLACE.

GRAIN-DRILL.

SPECIFICATION forming part of Letters Patent No. 641,498, dated January16, 1900.

Application led February 18,1899. Serial No. 705,968. (No model.)

,To all whom it' may concern:

Be it known that we, CHARLES R. GRAIN, Louis C. EVANS, and HARRY E.DoDsoN, citizens of the United States, residing at Springfield, in thecounty of Clark and State of Ohio, have invented certain new and usefulImprovements in Grain-Drills, of which the following is a specification,reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements ingrain-drills; and the particular feature of such machine to which ourinvention directly refers is a combined furrow-opening andseed-delivering device.

The objects of our invention are, first and principally, to remove,essentially,all of the adhering soil or earth from that side of thefurrow-opening disk next to the wing or shield of the seed-deliveringdevice, and so to eX- clude such earth or soil from admission into thespace between the disk and wing or shield, and, secondly, to provide aclearance-space between the disk and wing or' shield immediately back ofthe rear contact-line of the disk and wing or shield, it being thepurpose of our invention to successfully perform these functions in dampor comparatively wet and soggy soil.

We are aware that it is old to construct wings or shields so that merelytheir forward edge will stand close to the side of the disk and willconform to the outline of the disk radially or nearly radially and thatin such cases the wing would generally, certainly to some extent, removemuch of the soil from the disk, particularly if the ground was in anormal seeding condition; but in all such cases two defects haveexisted: First, the operation of removing the soil has been so imperfectthat the disks have remained heavily coated with the soil back of theessentially radial contact-line between the disk and wing, such soilhaving passed such contact-line and gotten into the seed-space betweenthe disk and wing. The effect of this was to gradually coat the insidesurface of the wing with this soil so carried in, the coating being keptup as the implement continued its work until in a short. time thecoating became so thick that it filled more and more and finallyessentially closed up the grain-space between the the seed-space fromtime to time.

wing and disk, and thereby impeded the passage of the grain to an extentthat either made the seeding too thin or stopped it altogether,requiring the operator to clean out The deL fective operation of theseold devices here described was particularly pronounced in soil in a wet,soggy, or sticky condition. It is our purpose to overcome this defectiveoper- 6o ation above described and to provide a furrow-opening andseeding device which will not be subject to such defect, even in soil ina wet, soggy, and sticky condition.

The first and principal general object above stated is carried intoeffect by forming or supplying the forward edge of our wing or shieldwith a contact-surface extending not only along a radial or essentiallyradial line, but, in addition thereto, along a horizontal or es- 7osentially horizontal line, such contact-surf face conforming to theoutline of the disk, and while not fitting against the disk so hard asto create undue friction, and thus add to the distress of thedraft-animals, being still in such intimate relation to t-he disk as toleave the barest and most attenuated film of space defined by what mightbe called delicate7 contact with the disk, running from the forward edgeof the wing or shield, thence 8o rearwardly and essentiallyhorizontally, thus leaving or producing between such surface and thedisk a film of space in width or latitude, but a passage or space ofgreat length or longitude.

A second object of our invention is carried into effect by dropping awaythe interior wall of the Wing or shield from or immediately next to therear edge of such contact-surface, so as to leave a clearance-spaceimmediately 9o to the rear or behind this edge, so that the soil which,though small in quantity, works through such passage will yet have spacethrough which it may fall away and down to the ground without beingcrowded against 95 the inner surface of the shield or wing.

Thus it will be seen that, functionally speaking, the first feature ofour invention, while avoiding excessive friction, with its objectionableincrease of draft and wearing of roo parts, yet removes so nearly all ofthe adhering earth from the disk that only the least 'quantity passes,while to allow theescape of this small quantity the clearance-space isprovided.

The third feature of our invention is to provide the shield with aconstruction which prevents the clogging at the grain-outlet, so that itwill operate in all kinds of ground, particularly in damp and stickyground, in a satisfactory manner. This object is carried out by means ofa notched or cut-out portion along the lower edge of such shield wherethe grain passes between the disk and shield in to the furrow.

This Vinvention also relates to an improved oil-cap for keeping theoil-holes in the diskjournal free from dirt.

Our invention also relates to details of construction and arrangementhereinafter appearing, and particularly pointed out in the claims.

In the accompanying drawings, on which like reference-letters indicatecorresponding parts, Figure 1 is a side elevation of a furrow-openingdisk, covering-wheel, and our invention used in conjunction with saiddisk. Fig. 2 is a detail perspective interior View of our improved bootentire; Fig. 3, a sectional view through the furrow-opening disk and ourimproved shield, the section being taken on the line mx of Fig. l,looking in the direction of the arrows; Fig. 4, a partial perspectiveview of the furrow-opening disk and its bearing-sleeve with our improvedoil-cap applied thereto; Fig. 5, a detail sectional View of the saine,the section being taken on the line yy of Fig. 4:, lookingin thedirection of the arrows; and Fig. 6, a detail view showing threescraping devices applied to the shield.

The letter A represents a dragebar to which is secured a clip B by meansof bolts C. This clip acts as a support for the disk-bearing, consistingof a sleeve D, mounted on a bolt E, passing through the sleeve and clip.To the lower end of the drag-bar and adjacent to the lower edge of theclip is bolted a boot F, having its lower portion formed into a shieldF' and embodying the principal features of our invention.

It will be seen that the forward edge of our wing or shield is providedwith a contact-surface Gin contact or substantially in contact with theconvex side of the disk l-I and extending not only along a radial oressentially radial line, but, in addition thereto, along a horizontal oressentially horizontal line, such contact-surface conforming to theoutline of the disk, and while not fitting against the disk so hard asto create undue friction is still in such intimate relation thereto asto have but a film of space between them. Immediately in the rear ofthis contact-surface the shield preferably drops away from the disk, sothat a pronounced clearance-space is formed, whereby such thinattenuated soil as may adhere to the disk when it reaches the inner edgeofthis contact-surface breaks up into fine parts and drops down with theseed or causing the remaining adhering soil to' readily fall away andescape from the disk after the scraping function is performed, suchclearance-space permitting this dislodgment and falling away of suchremaining soil without the possibility of the same crowding or lodgingbetween the disk and shield, which soil in older structures wouldcontinue to adhere to the disks and gradually collect on the inner sideof the shield, because it had no means of escape and was not drawn orattenuated by said contact-surface- Again, the great length of thecontact-surface horizontally compared with the thin film of space allowsvery little earth to get past, as such earth is so reduced that only asmall quantity reaches the clearance-space.

While We have shown but one contact-surface, still we wish it to beunderstood that it is within our invention to Aemploy a succession ofsuch surfaces with a space between them, as illustrated in Fig. 6. Thelower end of the spaces or passages a are opened to permit the soil todrop down, the same as in the other form. Thus, aside from preventingthe accumulation of soil and clogging between the disk and shield, thedisk is kept clean, so that it will operate more easily.

Passing now to the third feature of our invention-namely, theconstruction which willprevent the space between the shield and diskfrom clogging along their lower edges and from filling with soil, sothat the grain will be prevented from dropping regularly into theseed-furrow-it will be seen that such edge of the wing is notched, asshown at I. In the illustration such notched-out portion commences nearthe lower forward end or toe of the shield and extends rearward andupward. When the disk is lowered into Very sticky soil, the lower end ofthe boot and, in fact, the lower end of the grain or hopper tube, whichin practice projects within the boot to a considerable extent, becomefilled with soil, and unless at once removed the grain will till thegrain-tube or the space between the disk and shield and cause a skip inthe drill-row. By reason of the lower edge of the shield being notchedor cutout all this is prevented, because as the disk travels rearwardlyfrom the edge J of the notched or cutout portion the sticky soil is tornfrom its support along one side and immediately falls down within thefurrow along with the falling seed. Thus this feature of our inventionis particularly useful, especially in the early IOO IOS

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springtime, as few fields are free from sticky spots, where the disksare liable to sink in more or less and where they will easily becomeclogged in the absence of this feature.

Referring now to the improved covers for the oil-hole leading into thejournal of the furrowing-disk, it will be seen that a bracket K issecured to the flange-sleeve L by means of arivet M. This bracket hasproj ectin gtherefrom a stud N, adapted to have a spring O coiled aboutit and to extend through a hole P in a cover Q and into a depression insaid sleeve. Thus the cover may be raised on the stud Nat pleasure,butis normally held seated by said spring. In order to keep the oil-holeR free from dirt and also to assist in retaining the cover over saidoil-hole, we provide a lug S, which projects within said oil-hole, thecover being additionally held in place by reason of the bifurcated end Tengaging with a raised portion U, extending from the outer end of thesleeve L. Thus with this device there is no danger of losing the covers,and the oil-holes will always remain closed when the machine is inoperation, so that no dirt may enter.

Having thus fully described our invention, what we claim as new, anddesire to secure by Letters Patent, is- A l. In a furrow-opening device,the combination with a revoluble journaled disk, of a shield or winghaving along its forward edge a surface conforming to the disk and insuch relation thereto as to constitute slight contact, as defined,thereby leaving only a most attenuated space in width along the verticaldirection of said surface, but of great comparative length along thehorizontal direction of said surface, the inner side of the shield orwing from the rear edge of said surface droping -away so as to form theclearance-space, as described.

2. In a combined furrow-opening and seeddelivering device, thecombination with a journaled disk, of,a boot working in conjunction withsaid disk, and means connected with the forward edge of the lower partof said boot for scraping and breaking up the earth clinging to the sideofthe disk adjacent tothe boot, such means back of the scraping featuresreceding from the disk to form a clearance-space for the descent of thebroken soil.`

3. In a combined furrow-opening and seeddelivering device, thecombination with a j ournaled disk, of a boot having a wing workinginconjunction with said disk, and a scraping device, connected with theforward edge of said wing, the wing dropping away abruptly from theinner edge of said scraping device, substantially as shown anddescribed.

4. In a combined furrow-opening and seeddelivering device, thecombination with a journaled disk, of a boot havingawing working inconjunction with said disk, Scrapers, having abrupt rear edges,connected with the forward inner portion of said shield, and adapted toscrape and break the soil, clinging to said disk adjacent to said wing,substantially as shown and described.

5. In a combined furrow-opening and seeddelivering device, thecombination with a journaled disk, of a boot having a wing working inconjunction with said disk, and conformed to its shape along the wingsforward edge, said wing having a notch therein back of its forward edge,substantially as shown and described.

6. In a combined furrowopening'and seeddelivering device, a boot havinga wing connected therewith and having a scraping device along itsforward edge and a notched or cut-away portion in its lower edge,substantially as shown and described.

7. In a combined furrow-opening and seeddelivering device, thecombination with a journaled disk, of a boot having a wing workinginconjunction with said disk and conforming to the shape thereof along itsforward edge, a scraping device having its inner edge raised from saidwing, said wing being constructed to also release the soil from itsgraindelivery opening, substantially as shown and described. y

8. In a combined furrow-opening and seeddelivering device, thecombination with a j ournaled disk, of a boot having a wing working inconjunction therewith, and having its lower contour shaped to releasethe soil,which crowds into the grain-delivery passage, from s uchpassage, when the disk rotates.

9. In a combined f urroW-opening and seeddelivering device, thecombination with a bracket carrying a stud, an oil-hole covering pivotedupon said stud and an interposed spring between said bracket andcover,where by the cover 'is held closed.

10. In a combined furrow-openin g and seeddelivering device, thecombination with a bracket carrying a stud adapted to extend within ahole or depression in the bracketsupport, of an oil-hole cover pivotedupon said stud and having a lug projecting therefrom adapted to fit inthe oil-hole, substantially as shown and described.

ll. In a combined furrow-opening and seeddelivering device, thecombination with a bracket carrying'a stud adapted to extend within ahole or depression to support its free end, of an oil-hole cover pivotedupon said stud and having a lug for fitting within the oil-hole andhaving its outer end bifurcated to fit over a projection, and aninterposed spring on said stud between the cover and bracket for holdingsaid cover in position, substantially as shown and described.

In testimony whereof we affix our signatures in presence of twowitnesses.

CHARLES R. GRAIN. LOUIS C. EVANS. HARRY E. DODSON.

Witnesses:

C. C. KIRKPATRIGK, J. SHAW.

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